SY20 postcode district

Postcodes and sectors

421 of the district's 497 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there. The live postcodes centre on 52.61499, -3.81859, which locates the district, not a building.

Companies registered in SY20

Companies House lists 307 companies with a registered office in SY20; none of them at an address shared by 25 or more companies (1 October 2026 snapshot). 25 is the count at which the address lookup reports a company cluster.

Places OS Open Names lists for SY20

• Wales
• Powys
• Gwynedd
• Machynlleth
• Sir Ceredigion
• Ceredigion
• Corris
• Corris Uchaf
• Penegoes
• Pennal
• Aberllefenni
• Aberangell
• Cemmaes
• Tre Taliesin
• Minllyn
• Cwm-Llinau
• Ffwrnais
• Furnace
• Tre'r-ddol
• Glantwymyn
• Cemmaes Road
• Derwenlas
• Commins Coch
• Dinas Mawddwy

Roads filed under SY20

Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.

• Bank Lane
• Bank Street
• Bluebell Wood
• Bodlondeb Lane
• Braich-Goch Terrace
• Brickfield Street
• Bridge Street
• Bro Dulas
• Bryn-y-Gog
• Cae-Gybi
• Cae-Gybi Road
• Cae Bitffald
• Cae Coedcau
• Cae Crwn
• Cae Maenllwyd
• Chapel Street
• Coedcau Field
• Craig Fryn
• Daulwyn
• Dyfi Eco Park
• Felindre
• Ffordd Glyndwr
• Ffordd Mynydd Griffiths
• Ffordd Pendre
• Fford Tan-y-Coed
• Forge Road
• Garden Village
• Garsiwn
• Garth Road
• Gasworks Lane
• Goledd Dyfi
• Graig Fach
• Heol Iorwerth
• Heol Maengwyn
• Heol Pen'rallt
• Heol Pentrerhedyn
• Heol Powys
• Heol y Doll
• Idris Street
• Kingfisher Glade
• Lledfair Place
• Llwybr Tyfi
• Llynlloedd Lane
• Llys Glyndwr
• Llys yr Efail
• Machynlleth Millennium Bridge
• Maes-y-Garth
• Maes-y-Llan
• Maesafallon
• Maes Dyfi
• Maes Glas
• Maes Helyg
• Maesnewydd
• Maes Teg
• Maes yr Orsaf
• Min-y-Ddol
• Minffordd Street
• New Street
• Newtown Road
• North Road

Check an address in SY20

Check an address in SY20

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=SY20" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about SY20

What does an SY20 postcode tell you?

That the address lies in the SY20 district of the SY (Shrewsbury) postcode area, and the place OS Open Names most often lists first for its postcodes is Machynlleth. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 421 live postcodes.

Where the counts come from

• ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
• os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
• uk-companies-house · version 2026-10-01 · Companies House free company data product, Open Government Licence v3.0

What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.

Data synced on 2026-11-01: the newest version among the datasets listed above.

Districts nearest SY20

• SY1913.0 km
• LL4016.2 km
• LL3616.6 km
• LL3916.8 km
• LL3516.9 km
• LL3818.0 km
• LL3718.8 km
• LL4220.2 km
• SY2420.9 km
• LL4325.6 km
• SY1726.0 km
• SY1826.5 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids